China has long adhered to a principle of 'non-interference' in other states' affairs. However, as more of its companies have been investing in projects overseas, and millions of its nationals are travelling abroad, Beijing is finding itself progressively involved in other countries - through the need to protect these interests and citizens.

During the turmoil of the Arab Spring in 2011, China was compelled to evacuate more than 35,000 Chinese workers and expatriates from Libya, and later it led the hunt for the killers of 13 Chinese sailors in the Golden Triangle region of...